Report on Marapi (Indonesia) — June 1988

Scientific Event Alert Network Bulletin, vol. 13, no. 6 (June 1988)
Managing Editor: Lindsay McClelland.

Marapi (Indonesia) Two ash explosions

Please cite this report as:

Global Volcanism Program, 1988. Report on Marapi (Indonesia). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 13:6. Smithsonian Institution.

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0.381°S, 100.473°E; summit elev. 2891 m

All times are local (unless otherwise noted)

Single explosions ejected ash-laden eruption columns to 1 km above the vent on 7 and 8 July [see also 13:7].

Geologic Background. Gunung Marapi, not to be confused with the better-known Merapi volcano on Java, is Sumatra's most active volcano. This massive complex stratovolcano rises 2000 m above the Bukittinggi plain in the Padang Highlands. A broad summit contains multiple partially overlapping summit craters constructed within the small 1.4-km-wide Bancah caldera. The summit craters are located along an ENE-WSW line, with volcanism migrating to the west. More than 50 eruptions, typically consisting of small-to-moderate explosive activity, have been recorded since the end of the 18th century; no lava flows outside the summit craters have been reported in historical time.

Information Contacts: VSI.